China said Thursday investigations showed the United States and Russia had dumped oriented electrical steel on the Chinese market, and the United States had subsidized the exports.

The dumping and subsidies have caused substantial damage to the domestic industry, and China will charge deposits on the imports from the two economies from Friday, according to an initial ruling issued by the Chinese Ministry of Commerce (MOC).

The amount of the deposit paid at customs would be decided by the dumping margins of different producers. The dumping margins ranged from 10.7 percent to 25 percent by the U.S. companies, and 4.6 percent to 25 percent by the Russian companies.

China launched the anti-dumping probes into imports of the oriented electrical steel from the U.S. and Russia, and countervailing investigations into the imports from the United States on June 1.

It is China's first anti-dumping and anti-subsidy investigations on imported products from a single nation, and the initial ruling was made by strictly following regulations of the World Trade Organization (WTO) and domestic trade laws, said an official from the MOC.